I need to make some alterations to my exhaust....and although a kind member on here has offered to allow me to use his TIG welder if I can get the exhaust to him, It would be so much easier if I could weld the pipe "in situ" on the car/engine...

So, If I put stainless wire and pure argon into my MIG welder, what sort of quality welds will I get?

Will the welds just rust and crack?

Or will they hold together ok, all be it looking a bit FUGLY?

The exhaust will be pretty much hidden by the bodywork, so cosmetically im not really too bothered.....Just need it to cope with the heat and vibration

I regularly mig weld stainless at work - I just change the wire and go for it with the C02/argon mix gas...........no problems , but it is little harder to weld.....

Stainless stick welding does it for me as thats just what i am doing at the moment welding on stainless adapter pipes so i can slip it on to make an extra box to keep the noise down and to stop me from going deaf ,you've just got to be careful ,

Mike

I have been tacking my exhaust together over the weekend. It is my first time with stainless (and I am very much an amateur welder). I find you need a higher power setting, and wire speed than with mild steel. Also, I tend to get more burn back of the wire if your torch position isn't spot on. The welds are not as pretty as a TIG, but I hope functional. I cant decide if I should MIG it completely or grind off the tops of my tacks, then get it TIGd at work...